There has long been a scientific debate about what caused all of the extinctions that just seemed to follow humans wherever we went. Some said climate changes, despite the same species of animals having survived about a half dozen such changes previously. To me it has long been obvious that those arguing that we were innocent were simply insufficiently misanthropic and were in denial. Most scientists from whom we hear tend to be human themselves after all.

Now there’s a new study showing, of course, that we’re guilty as charged on all counts. And, this is just the relatively large species. It’s not even counting all the cute little critters we bulldoze over before we even know they’re there. OK, the speciescides referenced here predate bulldozers. So, maybe we didn’t kill off as many little species when we were still using clovis point weaponry, not as many as we are now anyway.